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add aes128cfb, delete unused files

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wangyu-
2018-07-21 02:06:15 -05:00
parent a7849b3634
commit 565034dbae
8 changed files with 106 additions and 1009 deletions
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1
lib/aes_faster_c/aes.h
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@@ -37,6 +37,7 @@
////////modification begin
#define POLARSSL_AES_ROM_TABLES
#define POLARSSL_CIPHER_MODE_CBC
#define POLARSSL_CIPHER_MODE_CFB
//#define POLARSSL_SELF_TEST
#define polarssl_printf printf
///////add end

65
lib/aes_faster_c/wrapper.cpp
View File

@@ -1,6 +1,7 @@
#include "aes.h"
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#if defined(AES256) && (AES256 == 1)
#define AES_KEYSIZE 256
@@ -25,32 +26,64 @@ void AES_ECB_decrypt(const uint8_t* input, const uint8_t* key, uint8_t *output,
void AES_CBC_encrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv)
{
static aes_context ctx;
static int done=0;
if(done==0)
{
aes_init( &ctx);
done=1;
}
char tmp_iv[16];
if(key!=0) aes_setkey_enc(&ctx,key,AES_KEYSIZE);
if(key!=0)
{
aes_init( &ctx);
aes_setkey_enc(&ctx,key,AES_KEYSIZE);
}
memcpy(tmp_iv,iv,16);
aes_crypt_cbc( &ctx, AES_ENCRYPT, length, (unsigned char* )tmp_iv, (const unsigned char*)input,(unsigned char*) output );
int ret=aes_crypt_cbc( &ctx, AES_ENCRYPT, length, (unsigned char* )tmp_iv, (const unsigned char*)input,(unsigned char*) output );
assert(ret==0);
return ;
}
void AES_CBC_decrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv)
{
static aes_context ctx;
static int done=0;
if(done==0)
{
aes_init( &ctx);
done=1;
}
char tmp_iv[16];
if(key!=0) aes_setkey_dec(&ctx,key,AES_KEYSIZE);
if(key!=0)
{
aes_init( &ctx);
aes_setkey_dec(&ctx,key,AES_KEYSIZE);
}
memcpy(tmp_iv,iv,16);
aes_crypt_cbc( &ctx,AES_DECRYPT, length, (unsigned char*)tmp_iv, (const unsigned char*)input, (unsigned char*) output );
int ret=aes_crypt_cbc( &ctx,AES_DECRYPT, length, (unsigned char*)tmp_iv, (const unsigned char*)input, (unsigned char*) output );
assert(ret==0);
}
void AES_CFB_encrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv)
{
static aes_context ctx;
char tmp_iv[16];
if(key!=0)
{
aes_init( &ctx);
aes_setkey_enc(&ctx,key,AES_KEYSIZE);
}
memcpy(tmp_iv,iv,16);
size_t offset=0;
int ret=aes_crypt_cfb128( &ctx, AES_ENCRYPT, length,&offset, (unsigned char* )tmp_iv, (const unsigned char*)input,(unsigned char*) output );
assert(ret==0);
return ;
}
void AES_CFB_decrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv)
{
static aes_context ctx;
char tmp_iv[16];
if(key!=0)
{
aes_init( &ctx);
aes_setkey_enc(&ctx,key,AES_KEYSIZE);// its aes_setkey_enc again, no typo
}
memcpy(tmp_iv,iv,16);
size_t offset=0;
int ret=aes_crypt_cfb128( &ctx,AES_DECRYPT, length,&offset, (unsigned char*)tmp_iv, (const unsigned char*)input, (unsigned char*) output );
assert(ret==0);
return;
}